Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Clerk, J (Juan)

Chess SA id

1100132103

FIDE id

Date of birth

2010-09-12 (U16)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1368.2

Item	Main	Standard	Rapid	Blitz
Rating	1363.4	1334	1284	1200
Raw rating	1363.4	1334	1284	1200
Weighted rating	1291.7	1244.3	1266.1	1200
Weighted performance	1258.9	1252.8	1079	0
Floor	871.9	834	784	700
K-factor	36	36	36	36
Min/Max rating change allowed	131.4	137	147.1	165.8
Highest rating	1371.9 2025-05-05	1334 2025-11-01	1284 2024-10-01	1200 2018-10-01
Highest raw rating	1371.9 2025-05-05	1334 2025-11-01	1284 2024-10-01	1200 2024-02-01
Highest weighted rating	1291.7 2025-11-01	1313.1 2018-10-01	1254.9 2025-08-01	1200 2018-10-01
Highest weighted performance	1371.9 2025-08-01	1280.5 2025-09-01	1269.8 2024-09-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1363.4	1334	1284	1200
Analysis
Rating	1363.4	1334	1284	1200
Raw rating	1363.4	1334	1284	1200
Weighted rating	1291.7	1244.3	1266.1
Weighted performance	1258.9	1252.8	1079
K-factor	36	36	36	36
Floor	871.9	834	784	700
Max/Min rating change allowed	131.4	137	147.1	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1363.4	1334	1284	1200
New weighted rating	1299.9	1253.4	1269.2	1200
New weighted performance	1251.1	1245.1	1071.4	0
Temp new rating	1363.4	1334	1284	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1363.4	1334	1284	1200
New K-factor	36	36	36	36
New floor	871.9	834	784	700

Item	Main	Standard	Rapid
	0	0	0
	37	37	0
	29	0	29
	6	0	6
	9	4	5
	0	0	0
History	86	41	45

Games since
	Main 66	Standard 37		Rapid 29		Blitz 0
Gender	Male
Age group	U16
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2581		825		360
Male	2076		635		290
U16	411		140		48
U16 Male	309		99		35
Standard
	RSA		Province		Region
Overall	2834		802		353
Male	2262		600		278
U16	455		144		51
U16 Male	343		101		36
Rapid
	RSA		Province		Region
Overall	1154		586		245
Male	936		465		210
U16	173		88		36
U16 Male	138		70		31
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	37	18.5	50	0	1364.7	1364.7
Standard	37	18.5	50	0	1364.7	1364.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	86	41	47.67	-19.8	1311.4	1291.6
Standard	41	19.5	47.56	-20.7	1364.7	1344
Rapid	45	21.5	47.78	-18.9	1262.9	1244
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1363.4	1334	1284	1200
2025-09-30	1309.1	1270.3	1284	1200
2025-09-01	1309.1	1270.3	1284	1200
2025-08-01	1311.2	1262.7	1284	1200
2025-07-01	1371.9	1313.1	1284	1200
2025-06-01	1371.9	1313.1	1284	1200
2025-05-01	1371.9	1313.1	1284	1200
2025-04-01	1314.3	1277.6	1284	1200
2025-03-01	1263.8	1207.7	1284	1200
2025-02-01	1255.8	1180.8	1284	1200
2025-01-01	1255.8	1180.8	1284	1200
2024-12-01	1255.8	1180.8	1284	1200
2024-11-01	1255.8	1180.8	1284	1200
2024-10-01	1255.8	1180.8	1284	1200
2024-09-01	1199.4	1180.8	1182.8	1200
2024-08-01	1199.4	1180.8	1182.8	1200
2024-07-01	1199.4	1180.8	1182.8	1200
2024-09-01	1199.4	1180.8	1182.8	1200
2024-05-01	1195.5	1180.8	1174.5	1200
2024-04-01	1195.5	1180.8	1174.5	1200
2024-03-01	1212	1180.8	1233.2	1200
2024-02-01	1193.5	1180.8	1196	1200
2024-01-01	1193.5	1180.8	1196	1200
2023-12-01	1193.5	1180.8	1196	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	5	4	Yes	Analysis
2	Cape Town Metro North Top Schools 2025 (U15)	2025-08-01	2025-08-02	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
3	Bellville Club Championship 2025 (B)	2025-03-03	2025-05-26	Standard	Cape Town (WCT)	9	9	2.5	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
5	CT Metro Schools Individual Closed 2025 (U15 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
6	CT Metro North Schools Chess Individual Trials 2025 (U15 Open)	2025-02-08	2025-02-09	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	5	4	Yes	Analysis
2	Cape Town Metro North Top Schools 2025 (U15)	2025-08-01	2025-08-02	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
3	Bellville Club Championship 2025 (B)	2025-03-03	2025-05-26	Standard	Cape Town (WCT)	9	9	2.5	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
5	CT Metro Schools Individual Closed 2025 (U15 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
6	CT Metro North Schools Chess Individual Trials 2025 (U15 Open)	2025-02-08	2025-02-09	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
7	CBC Rapid Chess Tournament 2024 (U14)	2024-09-14	2024-09-14	Rapid	Cape Town (WCT)	6	6	5.5	Yes	Analysis
8	Steinitz Chess Festival 2024 (Open Rapid)	2024-05-11	2024-05-11	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
9	Cape Town Open Rapid Chess Championship 2024 (U14)	2024-03-16	2024-03-16	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
10	Chas Everitt and MHI Attorneys Rapid 2024 (B)	2024-03-09	2024-03-09	Rapid	Cape Town (WCT)	6	5	1	Yes	Analysis
11	Cape of Good Hope Open Chess Tournament 2024 (U14)	2024-02-17	2024-02-17	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
12	Western Cape Closed Championship 2023 (U14)	2023-09-23	2023-09-23	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
13	Steinitz Open 2022 (C)	2022-05-21	2022-05-22	Standard	Cape Town (WCT)	5	4	1	Yes	Analysis
14	Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U14)	2022-02-19	2022-02-19	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
15	2020 Welgemoed Chess Challenge (U12)	2020-02-29	2020-02-29	Rapid	Cape Town (WCT)	5	5	1	Yes	Analysis

#	Games	Start				End
1	7	Tournament Steinitz Chess Festival 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-05-11	rnd 6	type Rapid	result 1	date 2024-09-14	rnd 6	type Rapid	result 0.5
		Opponent Uys, E (Emma)				Opponent Mefire, H (Habiba)
2	6	Tournament CT Metro Schools Individual Closed 2025				Tournament Bellville Club Championship 2025
		date 2025-03-01	rnd 3	type Standard	result 1	date 2025-03-10	rnd 2	type Standard	result 1
		Opponent Tom, L (Lunga)				Opponent Smit, M (Mario)
3	4	Tournament Cape Town Chess Federation Club League 2025				Tournament Cape Town Chess Federation Club League 2025
		date 2025-08-23	rnd 6	type Standard	result 1	date 2025-09-27	rnd 11	type Standard	result 1
		Opponent Makhasi, A (Athule)				Opponent Tyokwana, K (Khayone)

#	Games	Start				End
1	6	Tournament CT Metro Schools Individual Closed 2025				Tournament Bellville Club Championship 2025
		date 2025-03-01	rnd 3	type Standard	result 1	date 2025-03-10	rnd 2	type Standard	result 1
		Opponent Tom, L (Lunga)				Opponent Smit, M (Mario)
2	3	Tournament CT Metro North Schools Chess Individual Trials 2025				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2025-02-08	rnd 2	type Standard	result 1	date 2025-02-09	rnd 4	type Standard	result 1
		Opponent Bawden, M (Matthew)				Opponent Gerrits�, J (Jonathan)
3	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 3	type Standard	result 1	date 2025-04-26	rnd 4	type Standard	result 1
		Opponent Swart, E (Eon)				Opponent Small, Q (Quade)

#	Games	Start				End
1	7	Tournament Steinitz Chess Festival 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-05-11	rnd 6	type Rapid	result 1	date 2024-09-14	rnd 6	type Rapid	result 0.5
		Opponent Uys, E (Emma)				Opponent Mefire, H (Habiba)
2	3	Tournament Cape of Good Hope Open Chess Tournament 2024				Tournament Cape of Good Hope Open Chess Tournament 2024
		date 2024-02-17	rnd 2	type Rapid	result 0.5	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Chindiwawa, C (Claudius)				Opponent Alard, N (Nawaaz)
3	2	Tournament Steinitz Chess Festival 2024				Tournament Steinitz Chess Festival 2024
		date 2024-05-11	rnd 3	type Rapid	result 1	date 2024-05-11	rnd 4	type Rapid	result 0.5
		Opponent Venter, C (Chantelle)				Opponent Joannou, A (Andrew)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Steinitz Chess Festival 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-05-11	rnd 6	type Rapid	result 1	date 2024-09-14	rnd 5	type Rapid	result 1
		Opponent Uys, E (Emma)				Opponent De Abreu, T (Tristan)
2	3	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 3	type Standard	result 1	date 2025-03-02	rnd 5	type Standard	result 1
		Opponent Tom, L (Lunga)				Opponent Benjamin, C (Crushion)
3	3	Tournament CT Metro North Schools Chess Individual Trials 2025				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2025-02-08	rnd 2	type Standard	result 1	date 2025-02-09	rnd 4	type Standard	result 1
		Opponent Bawden, M (Matthew)				Opponent Gerrits�, J (Jonathan)

#	Games	Start				End
1	3	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 3	type Standard	result 1	date 2025-03-02	rnd 5	type Standard	result 1
		Opponent Tom, L (Lunga)				Opponent Benjamin, C (Crushion)
2	3	Tournament CT Metro North Schools Chess Individual Trials 2025				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2025-02-08	rnd 2	type Standard	result 1	date 2025-02-09	rnd 4	type Standard	result 1
		Opponent Bawden, M (Matthew)				Opponent Gerrits�, J (Jonathan)
3	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 3	type Standard	result 1	date 2025-04-26	rnd 4	type Standard	result 1
		Opponent Swart, E (Eon)				Opponent Small, Q (Quade)

#	Games	Start				End
1	6	Tournament Steinitz Chess Festival 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-05-11	rnd 6	type Rapid	result 1	date 2024-09-14	rnd 5	type Rapid	result 1
		Opponent Uys, E (Emma)				Opponent De Abreu, T (Tristan)
2	2	Tournament Cape of Good Hope Open Chess Tournament 2024				Tournament Cape of Good Hope Open Chess Tournament 2024
		date 2024-02-17	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Sobada, A (Anelisa)				Opponent Alard, N (Nawaaz)
3	2	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-23	rnd 4	type Rapid	result 1	date 2023-09-23	rnd 5	type Rapid	result 1
		Opponent Dippenaar, R (Ruben)				Opponent Viljoen, L (Lienka)

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Smith ,S (Shiloh)	3	0	-425	1	0	-425	2	0	-425	0	0	0
1	Smith ,S (Shiloh)	3	1382.3	957.3	1	1509	957.3	2	1253.3	957.3	0	0	0
2	Els ,A (Aiden)	2	1	0	1	1	425	1	0	-425	0	0	0
2	Els ,A (Aiden)	2	1411.2	1411.2	1	1461.2	1836.2	1	1375.8	986.2	0	0	0
3	Ashworth ,DA (Dylan Adrian)	2	1.5	212.5	1	0.5	0	1	1	425	0	0	0
3	Ashworth ,DA (Dylan Adrian)	2	1354.3	1566.8	1	1490.7	1354.3	1	1162.4	1779.3	0	0	0
4	Wepener ,A (Alexander)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Wepener ,A (Alexander)	1	1217.5	792.5	1	1200	792.5	0	0	0	0	0	0
5	Galant ,MF (Matthew)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Galant ,MF (Matthew)	1	1196.9	771.9	1	1199.2	771.9	0	0	0	0	0	0
6	Wright ,M (Malcolm)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Wright ,M (Malcolm)	1	1394.4	969.4	1	1393.7	969.4	0	0	0	0	0	0
7	Osborne ,R (Ryan Eugene)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	Osborne ,R (Ryan Eugene)	1	1421.3	1421.3	1	1418.6	1421.3	0	0	0	0	0	0
8	Adams ,K (Kenridge)	1	1	425	1	1	425	0	0	0	0	0	0
8	Adams ,K (Kenridge)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Dinana ,L (Liyakha)	1	1	425	1	1	425	0	0	0	0	0	0
9	Dinana ,L (Liyakha)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Salimu ,C (Chase)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Salimu ,C (Chase)	1	1877.9	1452.9	1	1861.6	1452.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

De Clerk, J (Juan)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms